Herbaceous perennial with 1-3 elongate bulbs terminating in a thick, iris-like rhizome; outer bulb coats veined with parallel, not net-like, persistent fibers; leaves obtuse, flat, strap-like 12-30 cm long, 8mm wide; flower stalk erect, longer than t...
Perennial, to 8.5 dm tall from slender ovoid bulbs; basal leaves linear, to 35 cm long; stem leaves fewer and smaller; flowering stem, one per bulb; inflorescence sparsely branched or a single raceme with small leaf-like bracts below each flower that...
Perennial; plants low, tufted, stemless or with short stem (0-4(6) cm long), stems prostrate; herbage usually silvery; foliage densely strigose with rather coarse straight and parallel, appressed, dolabriform hairs; stipules not connate; leaves 2-6.5...
Plants perennial; pubescence gray-villous, villosulous, or subtomentose, the longer hairs basifixed, the shorter dolabriform; stems prostrate, divaricately branched, 1-5.5 dm long; stipules near base of stem 2.5-8 mm long, fully encircling the stem; ...
Dwarf, acaulescent, perennial herb from a well-developed, short, but knotty caudex on a simple taproot; leaves 3-11 cm long, pinnately compound with 5-9 pairs of leaflets, each leaflet grayish pubescent below and nearly glabrous on the upper surface;...
Biennial; stems up to 2 m tall, sparingly branched, hairy; leaves about 40 cm long, pointed at the tip, lobed, the lobes toothed, teeth tipped with slender spines, upper surface of the leaves hairy, lower surface without hairs; the base of the stem l...
Small tree or shrub to 3 m tall; branches thorny, the thorns purplish brown, 3-4 cm in length; leaves simple, alternate and rhombic in outline, margins with 3-4 broad lobes on each side of the upper two-thirds of the leaf, these lobes with fine margi...
Herbaceous perennials to 1 m tall or more, stems erect. Leaves: Alternate, usually 3-5, orbiculate to broadly ovate or oblanceolate to elliptic-lanceolate, 8-21 cm long and 1.5-12 cm wide, erect to spreading, proximal or more evenly spaced ...
Winter annuals or biennials (perennial?); taproots enlarged above; stems 1 to several, usually with several branches 1.5-3.5 dm long, pubescent at base with simple trichomes, glabrous above ;leaves mostly in flat basal rosettes, denticulate to dentat...